Eyelet-setting machine



Jan. 22, 1924. 1,481,545

E. F. H. ENNA 'EYELET sgwwrxe MACHINE Filed Dc. 26 1922 2 Sheets-Sheet 1 V [7211672257- ErmTZ fiEnna Jan. 22, 1924.

E. F. H. ENNA EYELET SETTING MACHINE Filed D 26. 1922 2 Sheets-Sheet 2 Patented Jan. 22, 1924.

UNITED STATES raise PATENT OFFICE.

ERNST r. H. ENNA; or cornnnnenn, DENMARK. i I

EYErEr-sia'rrme MACHINE;

Application filed December 26, 1922; Serial no. 608,813.

T 0 all whom it may concern:

Be it known that I, ERNST F. H. ENNA. a subject of the King of Denmark, residing at Copenhagen, Denmark, have invented new and useful Improvements in Eyelet- Setting Machines, of which the following is a specification.

This invention relates generally to th parts or elements of an eyelet-setting machine which include the setting member and the elements which cooperate therewith in spreading and splittingthe endof aneyelet barrel opposite the previously formed flange or head, and in clenching the prongs into which the barrel end is split, to completely set the eyelet in the material by which it is carried.

The invention relates in particulartosaid elements, when organized to perform the operation of blind eyeletting, the eyelet being inserted, in some instances, inthe inner side of a group composed of a plurality of superimposed layers including an inner facing layer, a lining, and an outer layer constituting an exposedportion of a shoe upper.

In other instances the eyelet is inserted from the outer side of the group of layers.

In each instance, the eyelet is'clenched in and secured to layers at one side of the group and concealed by the layer at the opposite side, without being engaged therewith. v v

An applicationv for Letters Patent ofthe United States, filed by myself and Anton Haahr, September 11, 1922, Ser. No. 587,297, disc-loses improved mechanism whereby the eyelets are clenched between the engaged layers and the concealing layer, without liability of entering, or in any way engaging the concealing layer, so that the latter is entirely separate from the eyelets. Said mechanism includes a setting membe'r, having a settingshoulder adapted to cooperate with an anvil in partly spreading an eyelet barrel inserted in adjacent layers, a hammer adapted to cooperate with the anvil and with the concealing layer in vclenching the eyelet on one of said adjacent layers, and means for depressing said setting member and hammer successively, so that the partial spreading of the eyelet precedes the clenching thereof, and the clenching is effected wholly at one side of the. concealing layer. The hammer is adjustably, connected with the means whereby it is depressed, and is adjustable manually to initially set it atdif ferent distances above the setting shoulder, and cause it to conform to the thickness of the superimposed layers.

The object of the present invention is to provide means for automatically adjusting the hammer, s0 that no manual adjustment of the same is required.

The invention is characterizedby theimproved means hereinafter described and claimed, for attaining the above-mentioned object. 7

Of the accompanying drawings forming a part of this specification, I

Figure 1 shows partly in elevation, and

partly in section, parts of an eyelet-setting machine including the automatic means in which the present invention is embodied.

Figure 2 is a section on line 22 of ure 1, and a plan view of parts below said line, other parts shown by Figure 1 on said line being omitted.

Figure 3 is a section on line 33 of Figure 1.

Figures 4:, 5, 8 and 9 are fragmentary views, illustrating different stages of the punching and settingoperation. I, Figures 6 and 7 are PBISPGCUVGVVIGWS,

showing respectively, the nipple and the hammer hereinafter described. The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 represents the set ting member which is, in this instance, a tubular punch, adapted to form coinciding holes in a plurality of superimposed layers of material.

. The setting member is enlarged above its lower end, to provide a circumferential downwardly facing setting shoulder 18,

the frame of an eyelet-setting machine of a well known type, such as the Glass Il13.Cl11I1Q,,

disclosed by Letters Patent of the United States, Nos. 686,928, datedNovember 19,

1901', or 673,815, dated May 7, 1901; The

ltltl iii.

setting-machine is equipped with the usual anvil 17, on which the head of. the" eyelet rests, and with the usual positioning point 18, which catches and properly positions the eyelet upon the anvil, as the eyelet is fed from the reservoir through the chute or race way of the machine.

To the plunger 15 is fixed, as by nuts 19, a cross-head 20, having a recess 21, in its outer side, the upper and lower side 22 of said recess forming horizontal guides in which a block 23 is moved by any suitable means to vertically reciprocate the crosshead and plunger. As here shown, the block 23 is provided with a socket 24, in which may be loosely fitted a wrist-pin, to Which an orbital movement is imparted, in such manner as to cause the block to move both horizontally and vertically. the block sliding from end to end of the guides 22, and at the same time reciprocating the crosshead and plunger vertically.

Projecting from the inner side of the block 23 is a lug 26, which is movable in a horizontal slot 27, in the cross-head 20. and is provided with inclined or bevelled side faces, preferably curved, as shown by dotted lines in Figure 1, and adapted to engage correspondingly bevelled end faces, 28, on the upper end of a cylindrical. slide or secondary plunger 29, which is vertically movable to a limited extent, in the bore of the plunger 15, the latter, which may be called the primary plunger, being tubular above its lower end portion, to form a guide for said secondary plunger.

30 represents a ring or sleeve. which em braces and is slidable to a limited extent, on the reduced lower end portion 15 of the primary plunger, and is normally held yield ingly, by means presently described, against a shoulder 15 at the upper end of said reduced portion. The ring 30 is provided with a pair of upwardly projecting arms 31, which are movable in vertical guiding slots 32. in opposite sides of the fixed guide 16.

To the upper ends of the arms is secured a. transverse pin 33, closely fitted in a transverse orifice in the secondary plunger 29, and passing through vertical slots 34 in the primary plunger 15. A spring 35 inter posed between the lower end of the secondary plunger, and an abutment 36, formed by the closed end of the bore of the primary plunger, normally holds the ring 30 yieldingly against the shoulder 15", and yield ingly supports the secondary plunger with its bevelled end faces 28 in the path of the block lug 26.

The ring 30 is provided at its lower end with a reduced externally threaded nipple 37, with which is engaged an annular hammer, composed of a base 38, internally threaded to engage the nipple 37, and a sleeve 39, surrounding a portion of the setting member 12, and provided with an in \vardly projecting annular flange 40, which constitutes the head of the hammer, and surrounds the setting member above the shoulder 13.

lVhen the primary plunger 15 is raised. the setting member 12 is spaced from the anvil 17, the block 23 being at one end of its movement in the cross-head 20, so that the lug 26 is spaced from the end faces 28 of the secondary plunger. The movement of the block which depresses the cross-head and the primary plunger, causes said plunger and the secondary plunger 29 to move downward in unison. until the upper end of the barrel of an eyelet 44 whose head 44 is supported by the anvil 17. is partially split and spread. by the ,shoulder 13 of the setting member. When the setting member reaches this position, the lug 26 of the block 23 encounters one of the end faces 28, and in passing across the same, additionally depresses the secondary plunger 29, thereby depress ing the hammer. The hammer in moving to its depressed position. acts through the layer 43, hereinafter described, to complete the clenching of the eyelet, so that the eyelet is clenched by two operations, one following the other.

In using the described mechanism for blind eyeleting, the eyelet is inserted in and clenched on superimposed layers 41 and 42, without being clenched on a concealing layer 43, superimposed on the layer 42. The layer 43, which is provided with orifices coinciding with the eyelet-receiving orifices in the layers 41 and 42, embraces the setting member, above the shoulder 13. and bears on the head 40 of the hammer, said orifices being formed by the setting member when the latter is formed as a punch. The descent of the setting member causes the shoulder 13 to partially spread the eyelet barrel to such an extent that the spread end is of greater diameter than the orifice in the concealing layer 43, before said layer is pressed by the hammer head 40 against the barrel. The completion of the spreading of the eyelet barrel is therefore effected without liability of the entrance of the prongs formed by the clenching of the eyelet into the concealing layer, the latter being pressed by the hammer head 40 against the clenched end of the barrel, without being penetrated by the prongs, and therefore without adhesion to the clenched eyelet. The prongs ot' the clenched eyelet easily find their way between the layers 42 and 43, without engaging the ly free from the eyelet after the clenching operation.

The block lug 26, in passing across one of the faces 28, imparts a quick downward movement or hammer blow to the hammer, and this is followed by a quick upward movement of the hammer caused by the spring 35.

, latter, so that the concealing layer is entire- The foregoingdescription is reproducetl' screw threads with which they are provided 1 so that'toj adjust the hammer toward an e from'th'e setting shoulder 13,"it isnecessary to manu'ally'rotate the hammer.

In carrying out my invention I provide for the automatic adjustment of thehammer'to the thickness of the superimposed layers, as

next described. The hammer is f'adapted to be turned, or partially rotated about its 'cen ter, by means preferably" embodied in' gear teeth arranged in a segmental series on thebase 38,and a rack 60,'which is lield'in the path in which the setting member the hammer, and the'associated partsare' given a wdrk-feeding' movement from punching position shown by Figures 1 and 4, over a bed 58fto'asetting position over' the anvil 17 as shown by Figure 5, this movementbeing caused by suitable means, well known in this art.

When the gear teeth 45 are engaged with the rack by the feeding movement, the hammer is turned in one direction, and when the said movement is reversed to carry the setting member, and the associated parts, back to the position shown by Figure 1, the hammer is turned in the opposite direction.

A separable connection is provided between the hammer and the secondary plunger, whereby, when the hammer is turned by the feeding movement, it is positively connected with the secondary plunger, and when the hammer is turned by the return movement, it is released, and permitted to bear loosely by its own weight on the concealing layer 43, so that it adjusts itself to the upper surface of said layer. Said connection is preferably provided by interrupting the external thread of the nipple 37, so that the nipple has longitudinal threaded portions '52, alternating with unthreaded portions 53, and by similarly interrupting the internal thread in the nipple-receiving socket in the hammer base 38, so that the socket has longitudinal threaded portions 50, alternat ing with unthreaded portions 51. \Vhen the hammer is in the position shown by Figures 1 and 4, the portions 51 coincide with the threaded portions 52, so that the hammer is lose. When the hammer is over the anvil, as shown by Figure 5, the threaded portions engage the threaded portions 52, so that the hammer is positively connected with the nipple 37, and with the secondary plunger, and is caused by the descent of said plunger to cooperate with the concealing layer 43, in clenching the eyelet. To support the hammer a alnst an excessive downward move- 1 c'onne'ting; the hammer base with the Xd guide 16, at points I above the hammer,

said mearisbeinv preferably embodied in vertical rodsfi," xedattheir lower ends" to the hammer base 38, and havinghooks" 5 1 at their up er ends, loosely; best'riding and slida'bleon arcuate' resilient guide rods 55'.

Sajd rods a're fixedto studs 57, which are; fixed to the" guide 16. The rods and hooks" limit the downward movement of the harm mer whenthe latter is loosepan'd permit any" required upward movement of the hammer, and the described turning thereof.

The rack may be'fixed to" the" usual presser-foot 59, and said foot m'ay bemov ably secured in'p'lace by an arm5'9 adapted to swing'on afixedstud59 so fthatthepres ser-f oot and the rack may be displaced by swinging the arm on the'stud."

I claim:

1'. Ari eyelet setting machine, comprising:

a setting member afdapte'd'to cooperate with an anvil in partly spreading 1 an eyelet bar rel inserted in adjacent layers, a hammer adapted to cooperate with the anvil and with a concealing layer in clenching the eyelet on one of said adjacent layers, means for depressing said setting member and hammer successively so that the partial spreading of the eyelet precedes the clenching thereof and the clenching is effected wholly at one side of the concealing layer, said means including a reciprocating plunger, a separable connection between the hammer and the said plunger, and means for alternately releasing the hammer from and positively connecting it with the plunger.

movements 2. An eyelet-setting machine, comprising a setting member adapted to cooperate with an anvil in partly spreading an eyelet barrel inserted in adjacent layers, a hammer adapted to cooperate with the anvil and with a concealing layer in clenching the eyelet on one of said adjacent layers, means for depressing said setting member and hammer successively so that the partial spreading of the eyelet precedes the clenching thereof and the clenching thereof is efiected wholly at one side of the concealing layer, said means including a reciprocating plunger, a separable connection between the hammer and the said plunger, means for alternately releasing the hammer from and postively connecting it with the plunger, and means for loosely supporting the hammer when released from said plunger.

3 An eyelet-setting machine comprising, in combination, a primary plunger, a punching and setting member fixed to said plunger and adapted to cooperate with an anvil in partly spreading an eyelet barrel inserted in adjacent layers, a secondary plunger movable With and independently of the primary plunger, a hammer adapted tobe partially r0- tated and .formed to cooperate With the anvil and with: a concealing layer in clenching the eyeletlf on one of said adjacent layers, I

means for" depressing the primary and the secondary plunger successively, hammerrotating means adapted to turn the hammer in opposite direct-ions, separable connections between the hammer and the secondary plunger operable by a partial rotation of the hammer in one direction to positively connect the hammer with the plungerand by a partial rotation in the opposite direction to release the hammer from the plunger and render the hammer self-adjusting, and means forloosely supporting the hammer when released, so constructed as to permit it to rest loosely on the concealing layer, the hammer being depressed by the secondary plunger While it is positively connected With the said plunger, so that the clenching of the eyelet follows the partial spreading thereof, and is effected Whollyat one side of the concealing layer.

4:. An eyelet-setting machine substantially as specified by claim 3, the said hammerrotating means being embodied in gear teeth on the hammer base and a rack i adapted to engage said teeth hammer in opposite directions.

and turn the.

5. An eyelet-setting machine substantially as specified by claim 3, the said separable connections being embodied in an externally and an internally threaded socket formed in the hammer base, having alternating threaded and unthreaded portions, the

threaded portions of the socket being engageable with, and separable from,-the

ing movements of the hammer.

6. An eyelet-setting machine substantially as specified by claim 3, said hammer-supthreaded portions of the nipple,- by turnporting means being embodied in hooked I.

rodsfixed to and projecting above the hammer base, and fixed arcuate guides above the hammer on which said rods are slidable.

signature.

I ERNST F. H. ENNA.

In testimony WhereofI have affixed i; 

